CVE-2021-46315 : What You Need to Know
Learn about CVE-2021-46315, a Remote Command Execution (RCE) vulnerability in D-Link Router DIR-846, allowing malicious users to execute arbitrary commands. Find mitigation steps and preventive measures here.
A Remote Command Execution (RCE) vulnerability exists in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin, allowing malicious users to execute arbitrary commands.
Understanding CVE-2021-46315
What is CVE-2021-46315?
This CVE refers to an RCE vulnerability in HNAP1/control/SetWizardConfig.php in D-Link Router DIR-846, enabling attackers to execute unauthorized commands.
The Impact of CVE-2021-46315
The vulnerability allows attackers to input malicious commands through specific parameters, leading to unauthorized command execution.
Technical Details of CVE-2021-46315
Vulnerability Description
The vulnerability in HNAP1/control/SetWizardConfig.php in D-Link Router DIR-846 permits the execution of arbitrary commands using certain shell metacharacters in specific parameters.
Affected Systems and Versions
- Product: D-Link Router DIR-846
- Versions: DIR846A1_FW100A43.bin, DIR846enFW100A53DLA-Retail.bin
Exploitation Mechanism
Attackers exploit this vulnerability by embedding malicious commands in the ssid0 or ssid1 parameters to execute unauthorized actions.
Mitigation and Prevention
Immediate Steps to Take
- Update the firmware of the affected D-Link Router DIR-846 to the latest version.
- Implement strong password policies to deter unauthorized access.
Long-Term Security Practices
- Regularly monitor network traffic and system logs for suspicious activities.
- Conduct security assessments and penetration testing periodically to identify and mitigate vulnerabilities.
Patching and Updates
- Stay updated with security bulletins and patches released by D-Link to address known vulnerabilities.